#1B1690#1B1690

#1B1690 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.4% C 0.186 H 271.0°. Best body text is #FFFFFF at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#1B1690
RGB	rgb(27, 22, 144)
HSL	hsl(242, 73%, 33%)
HSV	hsv(242, 85%, 56%)
CMYK	cmyk(81.3%, 84.7%, 0%, 43.5%)
CIE-LAB	lab(19.31, 44.34, -64.18)
CIE-LCH	lch(19.31, 78.01, 304.64°)
OKLab	oklab(32.39% 0.0032 -0.1857)
OKLCH	oklch(32.39% 0.186 271)
XYZ	xyz(5.7712, 2.8198, 26.6203)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1690 #8B9016

analogous

#164E90 #1B1690 #581690

triadic

#1B1690 #901B16 #16901B

tetradic

#1B1690 #90164E #8B9016 #169058

square

#1B1690 #90164E #8B9016 #169058

split-complementary

#1B1690 #905816 #4E9016

monochromatic

#070626 #110E5B #1B1690 #251EC5 #453FE2

Accessibility & contrast

On white

13.43

#1B1690 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B1690 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1690

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1690	#FFFFFF	#000000	##FFFFFF
##1B1690	1.00	13.43	1.56	13.43
#FFFFFF	13.43	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003593

Deuteranopia (green-blind)

#00288E

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b1690;
/* rgb */ color: rgb(27, 22, 144);
/* oklch */ color: oklch(32.4% 0.186 271.0);

Tailwind

colors: {
  custom: {
    50: '#6f57b2',
    500: '#1b1690',
    950: '#000000',
  },
}

SCSS

$custom: #1b1690;
$custom-light: #6f57b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1690",
  "rgb": {
    "r": 27,
    "g": 22,
    "b": 144
  },
  "hsl": {
    "h": 242.459,
    "s": 73.494,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3239,
    "c": 0.18578,
    "h": 271
  },
  "luminance": 0.0282
}

Semantic roles & 50–950 ramp

primary

#1B1690

secondary

#BCC240

accent

#F038E9

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1B1690

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →